Talvez deva tentar algumas variações de ortografia:
comouter based » computer based (Expandir a Pesquisa), consumer based (Expandir a Pesquisa), promoter based (Expandir a Pesquisa)
duty comouter » duty computer (Expandir a Pesquisa)
natl comp » al comp (Expandir a Pesquisa), natalia comp (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
can newts » can newly (Expandir a Pesquisa)
based new » based next (Expandir a Pesquisa), based near (Expandir a Pesquisa), based n (Expandir a Pesquisa)
comp can » camp can (Expandir a Pesquisa), chimp can (Expandir a Pesquisa), comp la (Expandir a Pesquisa)
a clamp » _ clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa), a claims (Expandir a Pesquisa)
j natl » _ natl (Expandir a Pesquisa), j nail (Expandir a Pesquisa), j nat (Expandir a Pesquisa)
a duty » _ duty (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (((( j natl comp can new ) OR ( j a clamp can newts ))) OR ( a duty comouter based new ))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( j natl comp can new ) OR ( j a clamp can newts ))) OR ( a duty comouter based new ))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j natl comp can new ) OR ( j a clamp can newts ))) OR ( a duty comouter based new ))*.